Apparatus and process for casting



Feb. 12, 192 9. 1,701,559

' T. J. FLACK APPARATUS AND PROCESS FOR CASTING Filed O Gt. 14, 1927 Myra? WITNESS: ATTORNEY Patented Feb 12, 192.95

stares THEODORE J. FLACK, OF BROOKSSVILLR'FLORIDA.

APPARATUS AND "ER-GUESS FOR CASTING.

, Application filed October 14, 1927. Serial No. 226,121.

The present invention relates to the apparatus for and process for casting configurations and designs in metal or other fusible material, and has for an important object the elimination of the necessity of making a sepa rate pattern for the casting of each separate design.

A further object is to facilitate and cheapen the process of casting designs in metal.

Further objects are to provide a process whereby a multiplicity of varying designs maybe cast by the use of stock patterns and to provide a process whereby such patter s may be combined in various designs.

In order to better understand the process forming the subjectmatter of this invention access to the accompanying drawings may be helpful, in. which V Figure 1 represents a frame for casting a design, showing a design in place therein.

Figure 2 is a fragmentary view showing an additional element of the pattern in place above the elements shown in Figure 1.

Figure 3 is'a section on the line 3-3 of Figure 1, showing the position of the sand within the flask above and surrounding the design.

Figure i is a fragmentary view of the drag, showing the design as illustrated in Figure 1 as formed in the sand of the drag.

Figure 5 shows a third-portion of the design placed above the configuration shown in Figure 4 and ready to be tapped in place to complete the design.

Figure 6 is a section on the line 6-43 of Figure 5, showing the channels made in the formation of the design and with the middle element of thedesign still within the channels. I

Figure 7 shows in perspective the finished product of the process.

Referring to the drawings in detail, 10 designates the frame or drag of the fiaslr which is to be set upon the bottom or board 11 and which is made up of the angular members 12 and 13 hinged. together at 14: and latched together at 15 so that the drag may be removed from the banlr of sand in which the mold is formed. 7 The bottom or board 11, it

will be understood, is removable and there is provided the usual cope to cover the mold made inthe drag by the pattern. A portion of the pattern is designated as a whole at 16 and consists of separate elements 17, 18 and 19 which may be laid on the board as shown in Figure 1, and an additional element 20 may be positioned thereon in the manner as illustrated in Fi ure 2. Pins or wires 21 ma 1 be utilized to connect the elements of the pattern together and to the board. 22 designates the sand packed in the mold in which the configuration of the pattern is to be formed.

The process of molding by which the elimination of the making of a separate pattern.

and is done at a comparatively great expense.

It is proposed, according to the present process, to provide the molder with various letters of the alphabet and other configurations which may be combined to form a variety of designs. In accordance with the illustrations in the drawings the process will be described in connection with the use of letters, three letters being shown in the drawings which will suffice to illustrate, the letters being T, J and F. The letters T and F, which it will be presumed are the first and last initials of the name of a person whose initial monogram is to be formed, are laid on the board 11 of a mold and a member 19.may be laid thereagainst to form part of the mold of the gate through which the molten metal flows into the channels formed by the letters T and F; .Let us presume that it is desired to place the mid clle initial J between the other two letters so as to overlap the same. This letter, designated in the drawings by the numeral 20, is laid upon the patterns 17 and 18 disposed as described above upon the board 11. The three letters are then clamped in place to avoid any chance ofshifting, and holes are drilled as at 23 in Figure 2, said holes preferably passing through atleast two of the letters and at a point where, for instance, the letter J overlaps the same. There may be any number of these holes, as may be found convenient and desirable. These holes extend through the upper and lower letters and preferably a short distance into the board and into these holes are inserted the wires or guide pins '21, after which the letter J is removed. The pieces of wire or guide pins are preferably no longer than the depth of the drag of the flask in which the casting is to be molded rammed down, filling the same.

and are inserted into the drilled holes. These wire are preferably of steel or hard brass and will hereinafter be referred to as guide pins. These guide pins form an important tunc tion in the invention as it is upon these holes and guide pins inserted therein that the process depends for its success.

After the pins are inserted with the three letters all in position as described above, the top pattern, that is the letter J in the present instance, is lifted oil the guide pins, leaving the pins and the other two letters in place and leaving; the con guration as shown in Figure .l. The d r is then set on the board and the gate tlornnng member, which of usual character and comprises a plug 22 to be inserted. to make mect on with the channel termed by the inc )6) i9. is put in position, whereupon the n ld is ready to receive the sand which poured into the mold and The drag is then rolled over, the board removed, and the cope put on and rammed with sand in the usual manner, after which the cope is lifted on", ie same presenting merely a hat surface. After the cope has been rammed tull of sand it is removed from the drag and the patterns 'l and F are drawn out ot the sand in the usualmanner, leaving the channels 17 and 18 for the metal in the ton- 1 o't' the letters T and F as shown in Figure and of the gate forming member 1.), th guide pins remaining in place and protruding a short distance above the channels formed by the letters T and F, whereupon the sand is moistened to form it and letter J is placed upon the sand with the guide pins projecting through the holes bored therein. It is obvious trom the above description that the letter will occupy the same position relative to the letters T and F that it occupied in Figure 2. The letter 5 may then be tapped down into the sand, making the impression of the added letter to the patterns of the previously made impression and in the identical relationship to the other letters that it occupied in Figure 2. After the impression has been made and the upper surface of the letter J is flush with the upper edges of the channels formed by the letters T and F, the letter J is likewise removed and the cope, which is of sub antially the same construction as the drag and is not here shown, again placed upon the drag. The sand will yield to this insertion oi" the third letter readily ai er it has been Spread or sprinkled with water. Before closing the mold the guide pins are first pressed down into the sand to prevent the hot metal from burning the pins into the casting.

By the above mechanism and process monograms and other configurations may be made at a comparatively lowcost and in a comparatively short time after the order has been placed.

Having described my invention, what I claim is:

1. A device for use in molding designs for metal, comprising a mold and a plurality of independent patterns adapt-ed to be combined in a single pattern, guioe means insertible through said independent patterns to connect them together and to locate the position of said independent patterns relative to each other, said patterns being removable from said guide pins, and means for forming a gate to the channels formed by said patterns.

The process of molding designs having overlappmg elements. consisting in first laying certain of the elements on a support and superimposing the overlapping element, drilling aligned holes through the elements it crossing points and into the support, placng guide members in the holes and removing he superimposed element, making a mold of he first named elements and removing said elements, moistening the mold, then placing the overlapping elements on the reverse side oi the mold with the apertures thereof receiving the guide members, then removing the overlapping element, replacing the cope, and tapping it into the sand, then pouring metal into the mold in the usual:1nanner.

3. The process of molding designs having overlapping elements, consisting in laying an element of the design on asupport, and placing asecond element in overlapping relation thereto, drilling holes through crossing points of the elements and into the support, placing guide members in said holes, removing the overlapping element, placing a form on the support, filling the form with mold taking mate 'ial, inverting the mold, removing the support, removing the first named elei'nent, moistening the mold, placing the second named element on the mold with the guide members in the apertures thereof, tapping the second named elen'ientinto the mold, removing the same, placing a cope on the mold and pouring the metal into the mold in any well. known manner.

l. A device :tor molding designs having overlapping elements. comprising a mold frame, a supporting board associated therewith, a plurality of elemental designs adapted to be used in overlapping relation, guide members tor marking the m'erlapi ng posi tions of the elements, said element having removable connection with said guide members, and means tor taking the impression of said elements.

111 testimony whereof I atl'ixn'iy signature.

THEODORE J. FLASH. 

